I am considering getting either the Sony NW-HD3 or HD5. I know all there is to know about them, but wanted to know what people actually think of these devices (if you actually have one). The HD5 came out today though.

1. what are your opinions on the battery life - is it really "30 hours"?
2. what is the build quality like? Ive held an HD3 and its feels solid enough
3. do they break down easily?
4. are mp3s easily transfered (+ how fast)